
When dealing with situations such as a partner’s infidelity or a missing family member, how do you go about investigating someone’s personal information? How do the police access personal data? Is there really a personal data inquiry system? This article will introduce situations where you need to check personal information, the methods of doing so, and explain how a detective agency can help you resolve all your concerns immediately!
Table of Contents
- How to search for someone’s information? Learn about the situations where personal data needs to be checked and the methods for doing so.
- Frequently asked questions about personal data: Can the police access personal information?
- What kind of personal information can a detective agency find? An introduction to personal data inquiry services provided by detective agencies.

How to search for someone’s information? Learn about the situations where personal data needs to be checked and the methods for doing so.
What does personal data include? Information that can identify a person
Personal data includes information such as name, date of birth, ID number, passport, fingerprints, marital status, family, education, occupation, financial status, medical history, etc. These are all pieces of information that can directly or indirectly identify a person.
When do you need to check personal information? Obtain basic personal data to file a civil lawsuit
Generally, personal data is needed when there is a search for someone or when relevant information about an interested party is required. For example, in a debt dispute, you must obtain the debtor's basic personal information (such as their ID number or a communication address where legal documents can be served) in order to file a lawsuit. However, since failing to repay a debt is a civil dispute, public agencies do not have the obligation to check personal data for you under civil law. In this case, you need to find a way to investigate the other party's personal information so that the court will allow you to file the lawsuit.
How can you check personal information yourself? Is there really a personal data inquiry system?
In the past, before the Personal Data Protection Act, and in a time when privacy awareness was weaker, many websites freely posted a lot of personal information. Under the current Personal Data Protection Act, this is illegal, and most of these websites have been shut down. However, with the rise of social media today, through check-ins and mutual tagging among friends, it is possible to find a specific person. If you know the right methods, personal information can be found via "online searches." There’s a movie called "Human Flesh Search" which depicts a father using the internet to search for and find his daughter.

Frequently asked questions about personal data: Can the police access personal information?
Police officers, as well as prosecutors, generally have access to the case management systems of the National Police Agency, and can review various necessary data when required. However, they are also subject to the "Personal Data Protection Act" (also known as the Personal Data Protection Law). Each officer's inquiries are recorded, and if they search for information without legitimate reasons or secretly do so, it constitutes illegal activity.

What kind of personal information can a detective agency find? An introduction to personal data inquiry services provided by detective agencies.
If you want to hire a detective agency to check personal information, you must first prepare the relevant basic details, including the reason for the inquiry and basic clues about the person you are searching for (such as name, phone number, etc.). With these clues, the different points can be connected to form a clear path, leading to the success of your search!
Yitong Detective Agency has over 40 years of experience, from the days when phone books contained names and phone numbers to the current era governed by the Personal Data Protection Act. To survive through such changes means having solid expertise. Therefore, if you need help with personal data inquiries, whether it's for debt collection; finding a long-lost friend; suspicious phone records of your husband; or mysterious conversations in your wife's LINE, you can call us directly. We will provide you with the most professional service!
Below is a summary of the personal data inquiry services offered by Yitong Detective Agency for your reference:
Yitong Detective Agency Personal Data Inquiry Price List | ||||
---|---|---|---|---|
Investigation Item | Investigation Fee | Workdays | Client-Provided Data | Inquiry Report |
Mobile Phone Location | Project Price | 5–7 days | Mobile number | Target mobile number location |
IP Address Inquiry | Project Price | 5–7 days | IP and related data | IP location and related network data |
IP Inquiry | Project Price | 5–7 days | IP and related data | IP location and related network data |
Vehicle License Plate Address Inquiry | Project Price | 1–2 days | Vehicle license plate | Vehicle registration information |
Name Vehicle Inquiry | Project Price | 1–2 days | Name, ID number, Date of birth | All vehicles under the name |
Criminal Record and Wanted Inquiry | Project Price | 1–2 days | Name, ID number, Date of birth | Criminal record information |
Landline Inquiry | Project Price | 1–2 days | Name, ID number, Date of birth | Registered landline information |
Mobile Phone Inquiry | Project Price | 1–2 days | Name, ID number, Date of birth | Registered mobile phone information |
Address Inquiry for Phone Number | Project Price | 1–2 days | Address | Phone registration information |
Landline Inquiry for Address | Project Price | 1–2 days | Phone number | Provide detailed address |
Mobile Phone Address Inquiry | Project Price | 1–2 days | Phone number | Phone registration information |
Personal Household Registration | Project Price | 1–2 days | Name, ID number, Date of birth | Phone registration information |
Full Household Registration | Project Price | 1–2 days | Address | Household registration data |
Household Registration Tracking | Project Price | 1–2 days | Old address | Latest household registration data |
Exit and Entry Records Inquiry | Project Price | 1–2 days | Name, ID number, Date of birth | Latest exit and entry records |
Marriage Records | Project Price | 1–2 days | Name, ID number, Date of birth | Personal marriage records |
Personal Account Inquiry | Project Price | 5–7 days | Name, ID number, Date of birth | Account data under the name |
Account Holder Information Inquiry | Project Price | 5–7 days | Name, ID number, Date of birth | Detailed information of account holder |
Personal Movable Assets | Project Price | 5–7 days | Name, ID number, Date of birth | Registration of personal movable assets |
Personal Real Estate | Project Price | 5–7 days | Name, ID number, Date of birth | Registration of personal real estate |
Company Movable Assets | Project Price | 5–7 days | Company name and business registration number | Registration of company movable assets |
Company Real Estate | Project Price | 5–7 days | Company name and business registration number | Registration of company real estate |
Infidelity Evidence Collection | From 50,000 | 7–10 days | Detailed photos, name, license plate number, address, special instructions | |
Marriage Reconstruction or Destruction Assistance | From 200,000 | Not specific | Detailed photos, name, license plate number, address, special instructions | |
Infidelity Evidence on the Spot | From 200,000 | Not specific | Detailed photos, name, license plate number, address, special instructions | |
Mainland China Inquiry | From 200,000 | Not specific | Detailed photos, name, license plate number, address, special instructions | Detailed information (video evidence) |
International Projects | From 200,000 | Not specific | Detailed photos, name, license plate number, address, special instructions | Detailed information (video evidence) |
Company Investigation | From 20,000 | 15 days | Required data for each investigation | Required inquiry results |
Handwriting and Document Identification | Project Price | Within 30 days | Data for identification and comparison | Handwriting identification report |
Employee Conduct (Bribery, Kickback Evidence Collection) | From 30,000 | 15 days | Detailed photos, name, license plate number, address, special instructions | Required investigation results |
Missing Person Search | Project Price | 15 days | Detailed photos, name, related matters before disappearance | Detailed information (video evidence) |
Personal Movement Tracking | From 5,000 | 1 day / every 6 hours | Detailed photos, name, related matters before disappearance | Detailed information (video evidence) |
Counter Surveillance | From 5,000 | 1 day / every 6 hours | Designated location, date, and time | Detailed information (video evidence) |
Counter Tracking | Project Price | Project handling | Designated location, date, and time | Detailed information (video evidence) |